de la Merced was able to escape the cage and thus save his mask, although his fellow Viper Maniaco was less fortunate and was unmasked. Following Maniaco's mask loss Los Vipers were used less and less in AAA, especially Mosco de la Merced. During mid-2004 Los Vipers, in this case Mosco, Histeria and Psicosis II became involved in a feud with Heavy Metal, El Intocable and Zorro that led to a Steel Cage match at Verano de Escandalo 2004 in which the last man in the cage would be unmasked or have his hair shaved off. This time Mosco de la Merced was the last man in the ring and was forced to unmask per Lucha libre traditions. Independent circuit Not long after his mask loss Mosco de la Merced left AAA, but continued to wrestle as Mosco de la Merced on the independent circuit. In 2009 he began working for the Perros del Mal promotion, teaming with former Vipers' team mates Histeria and Psicosis II after they left AAA as well. He also teamed up with the original Mosco de la Merced, who wrestles as X-Fly. Championships and accomplishments Asistencia Asesoría y Administración Mexican National Atómicos Championship (5 times) – with Histeria, Maniaco and Psicosis II (4) Mexican National Tag Team Championship (1 time) – with Fuerza Guerrera Pro Wrestling Illustrated PWI ranked him #106 of the 500 best singles wrestlers of the PWI 500 in 1999 Universal Wrestling Association UWA World Lightweight Championship (1 time) Luchas de Apuestas record Footnotes References 1964 births Living people Mexican male professional wrestlers Mexican National Atómicos Champions Mexican National Tag Team Champions 20th-century professional wrestlers 21st-century professional wrestlers UWA World Lightweight Champions